package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class SortInteger {
    public static void main(String[] args) {
        Random rnd = new Random();
        List<Integer> list = new ArrayList<>();
        for(int i = 0; i < 10; i++){
            list.add(rnd.nextInt(100));
        }
        System.out.println("list原始数据："+list);

        Collections.sort(list); //从小到大排序
        System.out.println("list排序后数据："+list);
        System.out.println("list排序后第一个元素是："+list.get(0)); //小的

        Collections.reverse(list);//从大到小排序
        System.out.println("list从大到小排序："+list);
    }
}
